(Phys.org)—Telescope operators around the world have been notified that “Boyajian’s star” (officially known as KIC 8462852) has dimmed again, offering space researchers a unique opportunity to study the star, which has baffled scientists ever since its discovery by a team at Yale University in 2015 led by Tabetha Boyajian. Subsequently nicknamed Tabby’s star, it has been found to dim periodically to differing degrees, which cannot be attributed to a planet passing between it and us. At one point in time, it was found to have dimmed approximately 22 percent—by comparison, if a planet the size of Jupiter was to pass in front of our own star, an observer 1,300 light years away (the distance that Tabby’s star is from us), would see just a 3 percent reduction of light.